/*
* Copyright 2009-2010 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.as3commons.lang {

/**
 * Defines an interface for iterating over the values of an object.
 * 
 * @author Andrew Lewisohn
 */
public interface IIterator {
	
	//--------------------------------------------------------------------------
	//
	//  Methods
	//
	//--------------------------------------------------------------------------
	
	/**
	 * Move the iterator to the first item.
	 */
	function first():void;
	
	/**
	 * Move the iterator to the last item.
	 */
	function last():void;
	
	/**
	 * Returns the value of the next key, or false if there are no more keys.
	 */
	function next():Object;
}
}